Fixes out of array access

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

This fixes decoding of images if compression changes.
Regression since b040ffc8.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

* qatar/master:
  dxva2: Add missing #define to make header compile standalone
  arm: vp8: Add missing #includes for header to compile standalone
  doc: filters: Correct BNF FILTER description
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Forgotten when the resample_* fields were added.
Fix assert failures.

If buffersrc was configured for frames with an unknown layout,
the incoming frames will have channel_layout = 0.
If the format negotiation has selected a known (and compatible)
channel layout for the link, the frame is assumed to have
that layout, the field must be set before injecting the frame
in the filters.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes valgrind errors
should improve detection scores
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This was broken since 1f265f52.

Implemented since 624fb5f9.

Improves: 3-0-CORPSE.PIX
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes null pointer dereference

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes ticket #2290.

This also makes the changes of a3949fe1 applicable in both cases.

Fixes out of array accesses

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes out of array accesses

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

In particular, fix misbehavior in case main and overlay input formats
mismatch (e.g. YUV420 and YUV444).

Force termination when the overlay stream ends. Simplify scripting logic,
for example when an infinite source is used to generate a background for
a composite video.

In particular, dedicate first paragraph to deliver a short description of
the filter.

Fixes read after free.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Reported-by: durandal_1707
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  intreadwrite: tomi: Add missing attributes.h #include for av_always_inline
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Avoid to write more than one cuepoint per track and PTS in
mkv_write_cues(). This avoids a later assertion failure on "(bytes >=
needed_bytes)" in put_ebml_num() called from end_ebml_master(), in case
there are several cuepoints per track with the same PTS.

This may happen with files containing packets with duplicated PTS in the
same track.

* commit '8a11ce43':
  build: Ensure that output directories for header objects are created
  h264: Get rid of unnecessary casts

Conflicts:
	common.mak
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'fae6fd5b':
  h264/svq3: Stop using draw_edges
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '7ebfb466':
  h264: Don't store intra pcm samples in h->mb
  get_bits: Return pointer to buffer that is the result of the alignment

Conflicts:
	libavcodec/h264_mb_template.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Diego Biurrun <diego@biurrun.de>

* commit '2ed00820':
  h264: Add add_pixels4/8() to h264dsp, and remove add_pixels4 from dsputil

Conflicts:
	libavcodec/dsputil.c
	libavcodec/h264.c
	libavcodec/h264_mb_template.c
	libavcodec/h264addpx_template.c
	libavcodec/h264dsp.c
	libavcodec/h264dsp.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'e5ffffe4':
  h264chroma: Remove duplicate 9/10 bit functions
  x86: Use simple nop codes for <= sse (rather than <= mmx)
  vp56: Remove clear_blocks call, and clear alpha plane U/V DC only
Merged-by: Michael Niedermayer <michaelni@gmx.at>